Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong tac lua slippers" » "cong ty lua slippers", "cong tac cua slippers", "cong tac quan slippers", "cong cac luat slippers", "cong tac lua slippery", "cong tac lua grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cong tac lua slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong tac lua slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong tac lua slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong tac lua slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.